EP3417150A2 - Moteur thermique, en particulier moteur orc - Google Patents

Moteur thermique, en particulier moteur orc

Info

Publication number
EP3417150A2
EP3417150A2 EP17708154.4A EP17708154A EP3417150A2 EP 3417150 A2 EP3417150 A2 EP 3417150A2 EP 17708154 A EP17708154 A EP 17708154A EP 3417150 A2 EP3417150 A2 EP 3417150A2
Authority
EP
European Patent Office
Prior art keywords
heat engine
piston rod
working
engine according
oil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17708154.4A
Other languages
German (de)
English (en)
Other versions
EP3417150B1 (fr
Inventor
Rainer Schnur
Joscha Horbach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Devetec GmbH
Original Assignee
Devetec GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Devetec GmbH filed Critical Devetec GmbH
Publication of EP3417150A2 publication Critical patent/EP3417150A2/fr
Application granted granted Critical
Publication of EP3417150B1 publication Critical patent/EP3417150B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B9/00—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups F01B1/00 - F01B7/00
    • F01B9/02—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups F01B1/00 - F01B7/00 with crankshaft
    • F01B9/026—Rigid connections between piston and rod; Oscillating pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B17/00—Reciprocating-piston machines or engines characterised by use of uniflow principle
    • F01B17/02—Engines
    • F01B17/04—Steam engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/32—Engines characterised by connections between pistons and main shafts and not specific to preceding main groups
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F11/00—Arrangements of sealings in combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G1/00—Hot gas positive-displacement engine plants
    • F02G1/02—Hot gas positive-displacement engine plants of open-cycle type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G6/00—Devices for producing mechanical power from solar energy
    • F03G6/003—Devices for producing mechanical power from solar energy having a Rankine cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/56—Other sealings for reciprocating rods
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines

Definitions

  • the invention relates to a heat engine, in particular an ORC engine, with a crankcase and at least one connected to the crankcase working cylinder, in which a rigidly connected to a piston rod working piston movable and the piston rod at its end facing away from the working piston via a guided in the longitudinal direction of the piston rod Phillips pivotally connected to a connecting rod.
  • Heat engines in particular ORC engines, of this type are known through use, in particular those which are based on conventional internal combustion engines, whose cylinder liners are used to guide the articulated with the connecting rod crosshead.
  • the present invention has for its object to provide a new, long-term safe and low-maintenance operable with low consumption of lubricating oil heat engine of the type mentioned.
  • the heat engine of this invention is characterized in that the acted upon with a working medium interior (B) of the working cylinder is separated from the acted upon with oil interior (A) of the crankcase by two, each having a sealed passage opening for the piston rod having walls.
  • the two partition walls according to the invention each with a sealed passage opening for the piston rod, reliably prevent a closed circuit for the working medium, eg ethanol vapor, from being contaminated by lubricating oil and, after a short period of operation, an exchange of the working medium being necessary.
  • the wetted at the bottom dead center of the working piston with oil portion of the piston rod at the top dead center of the working piston reaches at most only to the feed-through opening, which faces the acted upon by the working medium interior (B). Oil residues, which are performed despite sealing the other passage opening with the wetted piston rod out of the crankcase, then do not get to the feedthrough opening on the working cylinder, so that there is no risk of the passage of oil and thus the contamination of the working medium.
  • a space (C) having an inspection and mounting purpose opening is formed between the two walls separating said internal spaces (A, B).
  • the piston rod has a ring barrier arranged in the space (C) between the partitions in order to catch creeping oil along the piston rod.
  • This ring lock can even be sealed against the piston rod and in particular have tear-off edges for oil.
  • the crosshead on its side facing the implementation has such a shape that during the movement of the piston to top dead center by the crosshead no Oil towards the bushing opening
  • the surface of the crosshead facing the respective passage opening has a conical shape.
  • the passage opening which faces the space (B) acted upon by the working medium, preferably has a seal which is effective even when the heat engine is at a standstill.
  • This standstill seal can advantageously be combined with a seal which can only assume the sealing of the passage opening when the heat engine is heated up to operating temperature, while the stationary seal increasingly loses its sealing effect with the heating to operating temperature.
  • the stationary seal may include an annular sealing member having a thermal expansion greater than the thermal expansion of the piston rod such that a sealing lip of the annular seal is raised from the piston rod at operating temperature.
  • a bucket tappet of an outlet valve of the working cylinder against a guide bush of the bucket tappet and thus the working space (B) of the working piston against an interior (D) of a cylinder head assembly seals.
  • the cylinder head assembly may be designed so that it can run without lubricating oil so as to have low friction.
  • FIG. 2 shows a still-seal used in the ORC engine of FIG. 1, and FIG.
  • FIG. 3 and 4 show parts of a cylinder head assembly of the ORC engine of Fig. 1 in
  • An ORC engine comprises a crankcase 1 and a working cylinder 2 connected to the crankcase 1.
  • a working piston 3 is movable, which is rigidly connected to a piston rod 4.
  • the coaxial to the sleeve 7 working cylinder 2 is connected in the example shown with the crankcase 1 via an intermediate housing, the housing walls 9 and 10 and an opening 1 1 has.
  • the housing wall 9 closes off the oil-injected interior A of the crankcase 1.
  • the housing wall 10 closes a space B of the working cylinder 2, in which a working medium passes, eg ethanol vapor.
  • Both walls 9,10 each have a sealed passage opening 12 and 13 for the piston rod 4.
  • a ring seal 14 made of plastic, such as PTFE, or bronze, which largely prevents the escape of oil from the crankcase 1.
  • the passage opening 12 facing surface 15 of the crosshead 5 ensures from the outset that in the movement of the working piston 3 by the crosshead in the direction of the through hole 12 thrown oil amount is low, by the oil from the conical surface 15 after can run outside and in the opposite direction.
  • the ring seal 14 is held in a removable neck 8 on the housing wall 9.
  • a ring lock 1 6 is arranged on the piston rod 4, which restrains residual quantities along the piston rod 4 of creeping oil, possibly exiting from the interior of the crankcase 1 despite sealing by the ring seal 14.
  • the ring lock 16 itself is sealed by a ring seal 17 against the piston rod 4 and one of the through hole 12 facing part of the ring lock 1 6 has at 19 several concentric ⁇ labriss- edges.
  • annular seal 20 For gas-tight sealing of the passage opening 13 in the housing wall 10 is an annular seal 20, which is effective with a standstill of the ORC motor, in Fig. 2 separately shown standstill seal 21 is combined.
  • the space between the ring seal 20 and the standstill seal 21 is connected to a space E.
  • the pressure level of room E is below the pressure level of rooms A, B and C.
  • the seals could be 20,21 housed in a cup-shaped approach that forms a bulge of the housing wall 10 and can be disassembled separately from the remaining housing wall 10, possibly over the space B. Also, the entire packing 20,21 could be removable through the room B through.
  • the disconnection 21 ensures a sealing of the passage opening 13, which is taken over by the ring seal 20 after the operating temperature has been reached.
  • the stationary seal 21 comprises an annular sealing element 23 made of PTFE with a sealing lip 24 which sealingly bears against the piston rod 4 in the cold state of the ORC motor, wherein the contact pressure of the sealing lip 24 against the piston rod 4 by an annular spring 37 is reinforced.
  • an annular sealing member 40 made of silicone.
  • the stationary seal 21 is advantageously subject to wear.
  • FIG. 3 An outlet valve shown in FIG. 3 in a (not shown in FIG. 1)
  • Cylinder head assembly of the working cylinder 2 includes a valve plate 38 and a coaxial with the valve plate 38 cup tappet 27 which is guided in a guide bush 28.
  • a sliding insert 29 in the guide bush 28 provides a guide of the tappet 27 in addition to its sealing against the guide bushing 28.
  • the interior B of the working cylinder 2 is thereby sealed against the interior D of the cylinder head assembly.
  • an oil lubrication of the cylinder head assembly shown in FIG. 3 can be dispensed with.
  • a multi-part ball socket is attached, which includes a ball socket insert 33.
  • ball socket engages a comprehensive of the rocker arm 30 ball pin 34 a.
  • the operating tion of the tappet 27 via a slide shoe 35 which is connected via a further ball pin 36 with the rocker arm 30. By the slide shoe 35 can move perpendicular to the direction of movement of the bucket tappet 27, the transmission of the rotational movement of the rocker arm 30 on the linear movement of the bucket tappet 27 is made possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un moteur thermique, en particulier un moteur à cycle organique de Rankine (ORC), qui comprend un carter de vilebrequin (1) et au moins un cylindre de travail (2) relié au carter de vilebrequin (1), cylindre dans lequel un piston de travail (3), relié de manière rigide à une tige de piston (4), peut se déplacer et la tige de piston (4) est reliée de manière articulée à une bielle, au niveau de son extrémité opposée au piston de travail (3), par l'intermédiaire d'une crosse guidée dans la direction longitudinale de la tige de piston. Selon l'invention, l'espace intérieur du cylindre de travail (2), qui est soumis à l'action d'un fluide de travail, est séparé de l'espace intérieur du carter de vilebrequin (2), qui est alimenté en huile, par deux parois (9, 10) munies d'une ouverture de passage étanche (13, 14) pour la tige de piston (4).
EP17708154.4A 2016-02-16 2017-02-06 Moteur thermique, en particulier moteur orc Active EP3417150B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016102650.6A DE102016102650A1 (de) 2016-02-16 2016-02-16 Wärmekraftmaschine, insbesondere ORC-Motor
PCT/DE2017/100086 WO2017140297A2 (fr) 2016-02-16 2017-02-06 Moteur thermique, en particulier moteur orc

Publications (2)

Publication Number Publication Date
EP3417150A2 true EP3417150A2 (fr) 2018-12-26
EP3417150B1 EP3417150B1 (fr) 2020-08-26

Family

ID=58192019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17708154.4A Active EP3417150B1 (fr) 2016-02-16 2017-02-06 Moteur thermique, en particulier moteur orc

Country Status (6)

Country Link
US (1) US10954788B2 (fr)
EP (1) EP3417150B1 (fr)
CN (1) CN108779671A (fr)
DE (1) DE102016102650A1 (fr)
ES (1) ES2823175T3 (fr)
WO (1) WO2017140297A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10641166B1 (en) 2018-12-03 2020-05-05 Aquarius Engines (A.M.) Ltd. Piston rod and free piston engine
KR20230042275A (ko) * 2020-06-25 2023-03-28 아쿠아리우스 엔진스 (에이.엠.) 리미티드 가스 교환실을 갖는 내연기관
CN111706399B (zh) * 2020-07-03 2021-06-25 北京工业大学 一种用于有机朗肯循环的膨胀压缩一体机
US12326140B2 (en) 2022-11-16 2025-06-10 Hoerbiger Wien Gmbh Sealing device for a piston rod of a reciprocating compressor

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE322765C (de) 1916-07-28 1920-07-08 Fried Krupp Akt Ges Germaniawe Anordnung der Stopfbuechse fuer den Arbeitszylinder einer doppeltwirkenden Verbrennungskraftmaschine
DE1425497A1 (de) 1963-01-08 1968-12-05 Hering Dipl Ing Helmut Kolbenmaschine mit verschleissfceiev Dichtung
NL292724A (fr) * 1963-04-23
CH455394A (de) * 1966-03-25 1968-07-15 Sulzer Ag Kolbenstangendichtung einer Brennkraftmaschine
GB1549120A (en) * 1977-12-31 1979-08-01 United Stirling Ab & Co Hot gas engine comprising sealing means around piston rods
US4469017A (en) * 1983-02-23 1984-09-04 Dover Corporation Static leak seal assembly for use in fluid containing machinery
DE4100256C2 (de) 1991-01-07 1995-04-13 Ficht Gmbh Anordnung zum Abdichten einer Kolbenstangenlagerung einer Zweitakt-Brennkraftmaschine
DE102007017357A1 (de) 2007-04-03 2008-10-09 Devetec Ingenieurgesellschaft Mbh Wärmekraftanlage, insbesondere zur Nutzung von Wärmequellen niedriger Temperatur
DE102007060666A1 (de) 2007-12-17 2009-06-18 Gerhard Schilling Strom produzierendes Heizsystem
CN104747314B (zh) 2015-04-07 2017-03-01 江苏科技大学 一种十字头二冲程柴油机活塞杆填料函
CA2989613C (fr) * 2015-06-18 2023-06-27 S.P.M. Flow Control, Inc. Ensemble bielle et traverse pour amelioration de la performance d'une pompe a va-et-vient

Also Published As

Publication number Publication date
WO2017140297A3 (fr) 2017-10-19
ES2823175T3 (es) 2021-05-06
WO2017140297A2 (fr) 2017-08-24
US10954788B2 (en) 2021-03-23
US20190032488A1 (en) 2019-01-31
CN108779671A (zh) 2018-11-09
DE102016102650A1 (de) 2017-08-17
EP3417150B1 (fr) 2020-08-26

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